//循环语句

#include <stdio.h>
int main()
{
    int line =1;
    while (line <300)//while循环
    {
        printf("努力学习,day%d\n",line);
        line=line+1;
    }

    if (line ==300)
    {
        printf("成功了\n");
    }
    return 0;
}